Interference cancelation for 5G or other next generation network

ABSTRACT

An interference cancelation receiver can cancel channel state information reference signal interference using a single fast fourier transform (FFT), thereby reducing the complexity of the receiver. The transmitter can multiplex CSI-RS with a physical downlink shared channel (PDSCH) of another numerology, thereby improving a resource utilization. Thus, significant gains in link and system throughputs can be achieved via the use of the interference cancelation receiver.

RELATED APPLICATION

The subject patent application is a continuation of, and claims priorityto, U.S. patent application Ser. No. 15/401,083, filed Jan. 8, 2017, andentitled “INTERFERENCE CANCELATION FOR 5G OR OTHER NEXT GENERATIONNETWORK,” the entirety of which application is hereby incorporated byreference herein.

TECHNICAL FIELD

This disclosure relates generally to facilitating interferencecancelation. For example, this disclosure relates to facilitatinginterference cancelation for new radios (NR) in a mixed numerologyoperation for a 5G, or other next generation network, air interface.

BACKGROUND

5th generation (5G) wireless systems represent a next major phase ofmobile telecommunications standards beyond the currenttelecommunications standards of 4^(th) generation (4G). Rather thanfaster peak Internet connection speeds, 5G planning aims at highercapacity than current 4G, allowing higher number of mobile broadbandusers per area unit, and allowing consumption of higher or unlimiteddata quantities. This would enable a large portion of the population tostream high-definition media many hours per day with their mobiledevices, when out of reach of wireless fidelity hotspots. 5G researchand development also aims at improved support of machine-to-machinecommunication, also known as the Internet of things, aiming at lowercost, lower battery consumption and lower latency than 4G equipment.

The above-described background relating to a non-orthogonal design ismerely intended to provide a contextual overview of some current issues,and is not intended to be exhaustive. Other contextual information maybecome further apparent upon review of the following detaileddescription.

BRIEF DESCRIPTION OF THE DRAWINGS

Non-limiting and non-exhaustive embodiments of the subject disclosureare described with reference to the following figures, wherein likereference numerals refer to like parts throughout the various viewsunless otherwise specified.

FIG. 1 illustrates an example wireless communication system in which anetwork node and user equipment (UE) can implement various aspects andembodiments of the subject disclosure.

FIG. 2 illustrates an example schematic system block diagram of cyclicprefix orthogonal frequency-division multiplexing with mixed numerologyaccording to one or more embodiments.

FIG. 3 illustrates an example schematic system block diagram of filteredorthogonal frequency-division multiplexing with mixed numerologyaccording to one or more embodiments.

FIG. 4 illustrates an example schematic system block diagram of awindowed orthogonal frequency-division multiplexing with mixednumerology according to one or more embodiments.

FIG. 5 illustrates an example schematic system block diagram of amessage sequence chart between a network node and user equipmentaccording to one or more embodiments.

FIG. 6 illustrates an example schematic system block diagram of a 15 KHzchannel state information reference signal transmission with mixednumerology according to one or more embodiments.

FIG. 7 illustrates an example schematic system block diagram of a 60 KHzchannel state information reference signal transmission with mixednumerology according to one or more embodiments.

FIG. 8 illustrates an example schematic system block diagram of anexample schematic system block diagram of transmitter for a mixednumerology signal in NR according to one or more embodiments.

FIG. 9 illustrates an example schematic system block diagram of anexample schematic system block diagram of a frequency and time domainfor different numerologies according to one or more embodiments.

FIG. 10 illustrates an example schematic system block diagram of anexample schematic system block diagram of transmitter and receiver fastfourier transform (FFT) bin relationship according to one or moreembodiments.

FIG. 11 illustrates an example flow diagram for a mixed numerologycancelation procedure for a 5G network according to one or moreembodiments.

FIG. 12 illustrates an example block diagram of an example mobilehandset operable to engage in a system architecture that facilitatessecure wireless communication according to one or more embodimentsdescribed herein.

FIG. 13 illustrates an example block diagram of an example computeroperable to engage in a system architecture that facilitates securewireless communication according to one or more embodiments describedherein.

DETAILED DESCRIPTION

In the following description, numerous specific details are set forth toprovide a thorough understanding of various embodiments. One skilled inthe relevant art will recognize, however, that the techniques describedherein can be practiced without one or more of the specific details, orwith other methods, components, materials, etc. In other instances,well-known structures, materials, or operations are not shown ordescribed in detail to avoid obscuring certain aspects.

Reference throughout this specification to “one embodiment,” or “anembodiment,” means that a particular feature, structure, orcharacteristic described in connection with the embodiment is includedin at least one embodiment. Thus, the appearances of the phrase “in oneembodiment,” “in one aspect,” or “in an embodiment,” in various placesthroughout this specification are not necessarily all referring to thesame embodiment. Furthermore, the particular features, structures, orcharacteristics may be combined in any suitable manner in one or moreembodiments.

As utilized herein, terms “component,” “system,” “interface,” and thelike are intended to refer to a computer-related entity, hardware,software (e.g., in execution), and/or firmware. For example, a componentcan be a processor, a process running on a processor, an object, anexecutable, a program, a storage device, and/or a computer. By way ofillustration, an application running on a server and the server can be acomponent. One or more components can reside within a process, and acomponent can be localized on one computer and/or distributed betweentwo or more computers.

Further, these components can execute from various machine-readablemedia having various data structures stored thereon. The components cancommunicate via local and/or remote processes such as in accordance witha signal having one or more data packets (e.g., data from one componentinteracting with another component in a local system, distributedsystem, and/or across a network, e.g., the Internet, a local areanetwork, a wide area network, etc. with other systems via the signal).

As another example, a component can be an apparatus with specificfunctionality provided by mechanical parts operated by electric orelectronic circuitry; the electric or electronic circuitry can beoperated by a software application or a firmware application executed byone or more processors; the one or more processors can be internal orexternal to the apparatus and can execute at least a part of thesoftware or firmware application. As yet another example, a componentcan be an apparatus that provides specific functionality throughelectronic components without mechanical parts; the electroniccomponents can include one or more processors therein to executesoftware and/or firmware that confer(s), at least in part, thefunctionality of the electronic components. In an aspect, a componentcan emulate an electronic component via a virtual machine, e.g., withina cloud computing system.

The words “exemplary” and/or “demonstrative” are used herein to meanserving as an example, instance, or illustration. For the avoidance ofdoubt, the subject matter disclosed herein is not limited by suchexamples. In addition, any aspect or design described herein as“exemplary” and/or “demonstrative” is not necessarily to be construed aspreferred or advantageous over other aspects or designs, nor is it meantto preclude equivalent exemplary structures and techniques known tothose of ordinary skill in the art. Furthermore, to the extent that theterms “includes,” “has,” “contains,” and other similar words are used ineither the detailed description or the claims, such terms are intendedto be inclusive—in a manner similar to the term “comprising” as an opentransition word—without precluding any additional or other elements.

As used herein, the term “infer” or “inference” refers generally to theprocess of reasoning about, or inferring states of, the system,environment, user, and/or intent from a set of observations as capturedvia events and/or data. Captured data and events can include user data,device data, environment data, data from sensors, sensor data,application data, implicit data, explicit data, etc. Inference can beemployed to identify a specific context or action, or can generate aprobability distribution over states of interest based on aconsideration of data and events, for example.

Inference can also refer to techniques employed for composinghigher-level events from a set of events and/or data. Such inferenceresults in the construction of new events or actions from a set ofobserved events and/or stored event data, whether the events arecorrelated in close temporal proximity, and whether the events and datacome from one or several event and data sources. Various classificationschemes and/or systems (e.g., support vector machines, neural networks,expert systems, Bayesian belief networks, fuzzy logic, and data fusionengines) can be employed in connection with performing automatic and/orinferred action in connection with the disclosed subject matter.

In addition, the disclosed subject matter can be implemented as amethod, apparatus, or article of manufacture using standard programmingand/or engineering techniques to produce software, firmware, hardware,or any combination thereof to control a computer to implement thedisclosed subject matter. The term “article of manufacture” as usedherein is intended to encompass a computer program accessible from anycomputer-readable device, machine-readable device, computer-readablecarrier, computer-readable media, or machine-readable media. Forexample, computer-readable media can include, but are not limited to, amagnetic storage device, e.g., hard disk; floppy disk; magneticstrip(s); an optical disk (e.g., compact disk (CD), a digital video disc(DVD), a Blu-ray Disc™ (BD)); a smart card; a flash memory device (e.g.,card, stick, key drive); and/or a virtual device that emulates a storagedevice and/or any of the above computer-readable media.

As an overview, various embodiments are described herein to facilitateinterference cancelation for NRs in a mixed numerology operation for a5G air interface or other next generation networks. For simplicity ofexplanation, the methods (or algorithms) are depicted and described as aseries of acts. It is to be understood and appreciated that the variousembodiments are not limited by the acts illustrated and/or by the orderof acts. For example, acts can occur in various orders and/orconcurrently, and with other acts not presented or described herein.Furthermore, not all illustrated acts may be required to implement themethods. In addition, the methods could alternatively be represented asa series of interrelated states via a state diagram or events.Additionally, the methods described hereafter are capable of beingstored on an article of manufacture (e.g., a machine-readable storagemedium) to facilitate transporting and transferring such methodologiesto computers. The term article of manufacture, as used herein, isintended to encompass a computer program accessible from anycomputer-readable device, carrier, or media, including a non-transitorymachine-readable storage medium.

It should be noted that although various aspects and embodiments havebeen described herein in the context of 5G, Universal MobileTelecommunications System (UMTS), and/or Long Term Evolution (LTE), orother next generation networks, the disclosed aspects are not limited to5G, a UMTS implementation, and/or an LTE implementation as thetechniques can also be applied in 3G, 4G or LTE systems. For example,aspects or features of the disclosed embodiments can be exploited insubstantially any wireless communication technology. Such wirelesscommunication technologies can include UMTS, Code Division MultipleAccess (CDMA), Wi-Fi, Worldwide Interoperability for Microwave Access(WiMAX), General Packet Radio Service (GPRS), Enhanced GPRS, ThirdGeneration Partnership Project (3GPP), LTE, Third Generation PartnershipProject 2 (3GPP2) Ultra Mobile Broadband (UMB), High Speed Packet Access(HSPA), Evolved High Speed Packet Access (HSPA+), High-Speed DownlinkPacket Access (HSDPA), High-Speed Uplink Packet Access (HSUPA), Zigbee,or another IEEE 802.XX technology. Additionally, substantially allaspects disclosed herein can be exploited in legacy telecommunicationtechnologies.

Described herein are systems, methods, articles of manufacture, andother embodiments or implementations that can facilitate interferencecancelation for NRs in a mixed numerology operation for a 5G network.Facilitating interference cancelation for NRs in a mixed numerology fora 5G network can be implemented in connection with any type of devicewith a connection to the communications network (e.g., a mobile handset,a computer, a handheld device, etc.) any Internet of things (IOT) device(e.g., toaster, coffee maker, blinds, music players, speakers, etc.),and/or any connected vehicles (cars, airplanes, space rockets, and/orother at least partially automated vehicles (e.g., drones)). In someembodiments the non-limiting term user equipment (UE) is used. It canrefer to any type of wireless device that communicates with a radionetwork node in a cellular or mobile communication system. Examples ofUE are target device, device to device (D2D) UE, machine type UE or UEcapable of machine to machine (M2M) communication, PDA, Tablet, mobileterminals, smart phone, laptop embedded equipped (LEE), laptop mountedequipment (LME), USB dongles etc. Note that the terms element, elementsand antenna ports can be interchangeably used but carry the same meaningin this disclosure. The embodiments are applicable to single carrier aswell as to multicarrier (MC) or carrier aggregation (CA) operation ofthe UE. The term carrier aggregation (CA) is also called (e.g.interchangeably called) “multi-carrier system”, “multi-cell operation”,“multi-carrier operation”, “multi-carrier” transmission and/orreception.

In some embodiments the non-limiting term radio network node or simplynetwork node is used. It can refer to any type of network node thatserves UE is connected to other network nodes or network elements or anyradio node from where UE receives a signal. Examples of radio networknodes are Node B, base station (BS), multi-standard radio (MSR) nodesuch as MSR BS, eNode B, network controller, radio network controller(RNC), base station controller (BSC), relay, donor node controllingrelay, base transceiver station (BTS), access point (AP), transmissionpoints, transmission nodes, RRU, RRH, nodes in distributed antennasystem (DAS) etc.

Cloud radio access networks (RAN) can enable the implementation ofconcepts such as software-defined network (SDN) and network functionvirtualization (NFV) in 5G networks. This disclosure can facilitate ageneric channel state information framework design for a 5G network.Certain embodiments of this disclosure can comprise an SDN controllerthat can control routing of traffic within the network and between thenetwork and traffic destinations. The SDN controller can be merged withthe 5G network architecture to enable service deliveries via openapplication programming interfaces (“APIs”) and move the network coretowards an all internet protocol (“IP”), cloud based, and softwaredriven telecommunications network. The SDN controller can work with, ortake the place of policy and charging rules function (“PCRF”) networkelements so that policies such as quality of service and trafficmanagement and routing can be synchronized and managed end to end.

To meet the huge demand for data centric applications, 4G standards canbe applied to 5G, also called new radio (NR) access. 5G networks cancomprise the following: data rates of several tens of megabits persecond supported for tens of thousands of users; 1 gigabit per secondcan be offered simultaneously to tens of workers on the same officefloor; several hundreds of thousands of simultaneous connections can besupported for massive sensor deployments; spectral efficiency can beenhanced compared to 4G; improved coverage; enhanced signalingefficiency; and reduced latency compared to LTE. In multicarrier systemssuch as orthogonal frequency division multiplexing (OFDM), eachsubcarrier can occupy bandwidth (e.g., subcarrier spacing). If thecarriers use the same bandwidth spacing, then the subcarriers can beconsidered to comprise a single numerology (i.e., single subcarrierspacing). However, if the subcarriers occupy different bandwidth and/orspacing, then the subcarriers can be considered to comprise multiplenumerologies (i.e., multiple subcarrier spacing). A subcarrier with adifferent numerology can interfere with another subcarrier and/orsubcarrier spacing.

Downlink reference signals can be predefined signals occupying specificresource elements within a downlink time-frequency grid. There areseveral types of downlink reference signals that can be transmitted indifferent ways and used for different purposes by a receiving terminal.Channel state information reference signals (CSI-RS) can be used byterminals to acquire channel-state information (CSI) and beam specificinformation (e.g., beam reference signal received power). In 5G, CSI-RScan be user equipment (UE) specific so it can have a significantly lowertime/frequency density. Demodulation reference signals (DM-RS), alsosometimes referred to as UE-specific reference signals, can be used byterminals for channel estimation of data channels. The label“UE-specific” relates to the demodulation reference signal beingintended for channel estimation by a single terminal. The demodulationreference signal can then be transmitted within the resource blocksassigned for data traffic channel transmission to that terminal. Otherthan the aforementioned reference signals, there are other referencesignals, namely multi-cast broadcast single frequency network (MBSFN)and positioning reference signals that can be used for various purposes.

CSI-RS signal transmission is important for estimating the CSI. Althoughresources needed for CSI-RS can be small, when multiple numerologies aredeployed within the same OFDM bandwidth, using a conventional approach(as in LTE), estimating the CSI can comprise a CSI-RS resource grid forevery numerology. Time-frequency resources for CSI-RS can be high andoccupy a lot of bandwidth, thereby reducing the number of resources fordata transmission. Therefore, significant loss in data throughput canlimit the system capacity.

Disclosed herein is a receiver that can cancel the CSI-RS interferenceusing a single FFT, even when the numerology of the CSI-RS and the datachannel are different, thereby reducing the complexity of the receiver.Hence a transmitter can multiplex CSI-RS with PDSCH of variousnumerologies (e.g., subcarrier or subcarrier spacing) thereby improvingresource utilization. Therefore, significant gains in link and systemthroughputs can be achieved.

Rate matching in PDSCH is a block in baseband processing. The basicfunction of a rate matching module is to match the number of bits in atransport block (TB) to the number of bits that can be transmitted inthe given allocation. Rate matching can comprise sub-block interleaving,bit collection, and pruning. In PDSCH, rate matching can be performed bythe PDSCH TB being segmented into code blocks (CB) if its size isgreater than 6144 bits. Otherwise there can be no segmentation of theTB, but the TB and CB can be of same size. Rate matchine can beperformed over code blocks and performed after the code blocks haveundergone turbo encoding. The turbo encoder can perform a ⅓ rateencoding. For example, for every single input bit, 3 output bits can beprovided in which the first bit is the original input bit called as asystematic bit, and the remaining two bits can be an interleaved versionof the input bit called parity1 and parity2 bits. These three streams ofsystematic, partity1, and parity2 bits can be fed as input to a ratematching module.

In a mixed numerology case, the performance of a physical downlinkshared channel (PDSCH) can be improved by multiplexing the PDSCH of onenumerology with the CSI-RS of another numerology and the use of anadvanced receiver. However, due to the interference from the PDSCH ofthe other numerology, the channel estimation for the underlying UE canbe impacted if the CSI-RS is corrupted. An adaptive CSI-RS configurationcan be deployed where the CSI-RS density is adapted based on the PDSCHtransmission of the other numerology. Namely, based on the schedulingdecision of the other numerology, the CSI-RS density can be changed.Thus, the impact on channel estimation can be minimized when the datachannel of one numerology is multiplexed with the CSI-RS of the othernumerology. Thus, with the increase in CSI-RS density, the mean squareerror reduces, thereby providing significant gains in link and systemthroughputs.

For a mixed numerology case, rate matching can be inefficient and dependon the numerology mix. Therefore, the underlying PDSCH should be ratematched around the CSI-RS. Alternatively, the PDSCH transmitted can bemultiplexed via superposition transmission with the CSI-RS of the othernumerology. For example, the scenario of 15 KHZ and 60 KHZ mixing cancomprise two resource elements allocated for CSI-RS transmission. Then,for the PDSCH transmission for 15 KHz subcarrier spacing, a multiplex of2*(60/15) can equal 8 resource elements. Therefore, significant gainscan be expected for higher numerologies with the proposed system wherethese 8 resource elements will not be lost from the PDSCH for CSI-RStransmissions. Note that the above system assumes that the underlyingreceiver can cancel the CSI-RS interference due to a 15 KHz spacingcarrier. Also note that since CSI-RS and PDSCH are multiplexed,additional CSI-RS resources can be used for better channel estimation.The above technique can be extended by varying (reducing/increasing) thepower of CSI-RS of the higher numerology carrier and using higherdensity of CSI-RS resources. Consequently, the receiver does not requirecancelling of the CSI-RS of the other numerology.

The UE can estimate the channel from the CSI-RS and also detect datawhen the CSI-RS is multiplexed with the data channel. For channelestimation at the receiver side, the UE can leverage the followingequations. The received signal for the K^(th) subcarrier can be writtenas:y(k)=H(k)×(k)+n,  Equation (1)where: Y(k) is a received complex symbol value, X(k) is a transmittedcomplex symbol value, H(k) is a complex channel gain experienced by asymbol, and N is the complex noise and interference caused by the othernumerology.

Since CSI-RS can carry the known pilot symbols at the transmitter and atthe receiver, the channel estimate can be given by He(k) and computedbased on either least squares, mean square estimation (MSE), or anotherestimation technique. For example, using least squares can compute:He(k)=y ^(h)(k)x ^(h)(k)  Equation (2)

For data estimation for the numerologies, which are different comparedto the CSI-RS numerology, the received signal for the j^(th) subcarriercan be written as:y(j)=H(j)×(j)+Hr(j)xr(j)+n  Equation (3)where, Y(j) is a received complex symbol value, X(j) is a transmittedcomplex symbol value, H(j) is a complex channel gain experienced by asymbol, Hr(j) is a complex channel gain experienced by a symbol in theCSI-RS numerology, Xr(j) is the CSI-RS transmitted symbol, and N is thecomplex noise. Since the receiver can estimate the channel, the receivercan subtract the contribution due to CSI-RS in this numerology.

Hence, after subtraction, the received signal can be given by:y(j)−Hr(j)xr(j)=H(j)×(j)+n  Equation (4)

Once the component due to CSI-RS is subtracted from the received signal,conventional detection techniques can be used to detect the data in theother numerology.

When mixed numerologies are deployed within one OFDM carrier, there areinstances when one numerology UE can be scheduled in any part of theOFDM bandwidth. For instance, one numerology can be scheduled in onepart of the OFDM bandwidth and in another instance, another numerology(e.g., the interfering numerology can be scheduled in another part ofthe OFDM bandwidth. In these cases, the CSI-RS density can to adaptaccording to the PDSCH location of the interfering numerology. Hence theCSI-RS density can depend on the scheduling decision. Therefore thenetwork can indicate the CSI-RS density on those resource blocks wherethe PDSCH location of the other numerology is mixed with CSI-RSdynamically. In one technique, the network can send this information tothe physical layer signaling, such as a request to send the CSI atirregular intervals (aperiodic) and/or on demand CSI as part of theuplink control channel or the downlink control channel.

In the case of a semi-static indication of CSI-RS density, if thenetwork decides to use a different numerology PDSCH in certain resourceblocks for longer time periods, then the network can configure thoseresource blocks with high CSI-RS density and inform the UE about thepattern using RRC signaling.

CSI-RS transmission is important for estimating the CSI. The resourcesneeded for CSI-RS are, in general, very small and are transmitted overthe entire OFDM bandwidth. With mixed numerologies configured in thesame OFDM carrier, the CSI-RS can be transmitted using the approachdepicted in FIGS. 6 and 7. FIGS. 6 and 7 depict some of the examplecases where the PDSCH and CSI-RS are multiplexed with differentnumerologies. For a mixed numerology case, the REs between the separatenumerologies are inherently non-orthogonal, so even if the PDSCH is ratematched around the CSI-RS, there is potential interference between theCSI and PDSCH. Consequently, even if the PDSCH is rate matched aroundthe CSI-RS, the PDSCH demodulation can still suffer from interferencefrom the CSI-RS due to the numerology mixing. Therefore, the PDSCHsignal can skip the entire symbol in which the CSI-RS is transmitted.Such a symbol level rate matching is very in efficient since it wastes alot of resources.

Although the proposed interference cancelation receiver concept isexplained with reference to downlink, it should be noted that the sameprinciple can be applied for uplink as well as side link. For purposesof this disclosure, the mixed numerology signal comprises PDSCH andCSI-RS with different numerologies. However, the concept is not justlimited to the CSI-RS case only and can be extended to any other knownsignal that needs to be canceled. The framework for this disclosureworks for cancelation of signals that are known a-priori by the receiversuch as CSI-RS, or any other RS, PBCCH, synchronization/beam managementsignal, etc.

Signal complexity can be reduced by choosing the proposed interferencecancelation receiver whenever there is a PDSCH failure. For instance,the receiver can first decode the PDSCH without CSI-RS interferencecancelation. However if the PDSCH fails (e.g., cyclic redundancy checkfail), then rather than sending HARQ-NAK to the transmitter, the UE canuse the proposed interference cancelation receiver to remove theinterference from the CSI-RS of the other numerology.

There are two methods to communicate the interfering CSI-RS pattern andthe CSI-RS numerology to the UE. In the first case, when mixednumerologies are deployed within one OFDM carrier, there are instanceswhen one numerology UE can be scheduled in any part of the OFDMbandwidth (e.g., in one instance it can be scheduled in one part of theOFDM bandwidth and in another instance it can be scheduled in anotherpart of the OFDM bandwidth). In these cases, the CSI-RS configurationmight be different for the time instance. Hence the network can indicatethe interfering CSI-RS configuration and the numerology dynamically. Thenetwork can send this information to the physical layer signaling, viathe downlink control channel. For instance, a base station of thenetwork can indicate the interference CSI-RS when scheduling parametersfor the UE and provide the UE with the option to cancel theinterference.

In the second case, instead of sending the interfering CSI-RSconfiguration, the network can indicate all tentative interfering CSI-RSpossibilities and the numerologies a-prior to the UE using RRCsignaling. For instance, the base station can indicate all possibleinterference signals, which can allow the UE to cancel the interferenceas it sees fit.

In one embodiment, described herein is a method comprising based on afirst subcarrier spacing of a wireless network analyzing signalinterference data representative of a signal interference, and based ona first result of the analyzing by the mobile device, a cause of thesignal interference. In response to the determining, the method cancomprise decoding, by the mobile device using a sampling rate, thesignal interference data, and decoding channel state data associatedwith a channel state data reference signal, wherein the channel statedata is further associated with a second subcarrier spacing of themobile device. Consequently, based on the signal interference data andthe channel state data, the method can determine an estimated channelresponse frequency. Based on the signal interference, the method cangenerate an equivalent signal interference generated to be equivalent tothe signal interference, wherein the equivalent signal interference hasbeen modified as a function of the estimated channel response frequency,resulting in an estimated cancellation signal. Furthermore, based on theestimated cancellation signal, the method can comprise canceling areceived signal from the network device of the wireless network.

According to another embodiment, a system can facilitate, based on afirst subcarrier spacing of a wireless network, analyzing signalinterference data representative of a signal interference, anddetermining a cause of the signal interference. In response to thedetermining and to determine an estimated channel response frequency,the system can facilitate decoding the signal interference data using asampling rate, and decoding channel state data, associated with achannel state data reference signal, and associated with a secondsubcarrier spacing of the wireless network. In response to a conditionbeing determined to have been satisfied, the system can generate anequivalent signal interference to the signal interference. Additionally,the system can modify the equivalent signal interference as a functionof the estimated channel response frequency, resulting in an estimatedcancellation signal. Thus, based on the estimated cancellation signal,the system can facilitate canceling a received signal from the networkdevice of the wireless network.

According to yet another embodiment, described herein is amachine-readable storage medium that can perform the operationscomprising receiving first channel state data reference signalsassociated with first signal interference data. In response to thereceiving the first channel state data reference signals, the operationscan comprise facilitating canceling the first channel state datareference signals based on a condition associated with a mobile device.Based on a first subcarrier spacing of a wireless network, theoperations can comprise analyzing second signal interference datarepresentative of a second channel state data reference signal, not ofthe first channel state data reference signals. Furthermore, based onthe analyzing, the operations can comprise decoding the second signalinterference data and decoding the channel state data to determine anestimated channel response frequency.

These and other embodiments or implementations are described in moredetail below with reference to the drawings.

FIG. 1 illustrates an example wireless communication system 100 inaccordance with various aspects and embodiments of the subjectdisclosure. In example embodiments, system 100 is or comprises awireless communication network serviced by one or more wirelesscommunication network providers. In example embodiments, system 100 cancomprise one or more user equipment (UEs) 102 (e.g., 1021, 1022 . . .102 n), which can comprise one or more antenna panels comprisingvertical and horizontal elements. A UE 102 can be any user equipmentdevice, such as a mobile phone, a smartphone, a cellular enabled laptop(e.g., comprising a broadband adapter), a tablet computer, a wearabledevice, a virtual reality (VR) device, a heads-up display (HUD) device,a smart car, a machine-type communication (MTC) device, and the like. UE102 can also comprise IOT devices that can communicate wirelessly. UE102 roughly corresponds to the mobile station (MS) in global system formobile communications (GSM) systems. Thus, the network node 104 (e.g.,network node device) can provide connectivity between the UE and thewider cellular network and can facilitate wireless communication betweenthe UE and the wireless communication network (e.g., the one or morecommunication service provider networks 106, described in more detailbelow) via a network node 104. The UE 102 can send and/or receivecommunication data wirelessly to the network node 104. The dashed arrowlines from the network node 104 to the UE 102 represent downlink (DL)communications and the solid arrow lines from the UE 102 to the networknodes 104 represent uplink (UL) communications.

The non-limiting term network node (e.g., network node device) can beused herein to refer to any type of network node serving a UE 102 and/orconnected to other network nodes, network elements, or another networknode from which the UE 102 can receive a radio signal. In typicalcellular radio access networks (e.g., universal mobiletelecommunications system (UMTS) networks), they can be referred to asbase transceiver stations (BTS), radio base station, radio networknodes, base stations, NodeB, eNodeB (e.g., evolved NodeB), etc.). In 5Gterminology, the node can be referred to as a gNodeB (e.g., gNB) device.Network nodes can also comprise multiple antennas for performing varioustransmission operations (e.g., MIMO operations). A network node cancomprise a cabinet and other protected enclosures, an antenna mast, andactual antennas. Network nodes can serve several cells, also calledsectors, depending on the configuration and type of antenna. Examples ofnetwork nodes (e.g., network node 104) can include but are not limitedto: NodeB devices, base station (BS) devices, access point (AP) devices,and radio access network (RAN) devices. The network node 104 can alsoinclude multi-standard radio (MSR) radio node devices, comprising: anMSR BS, an eNode B, a network controller, a radio network controller(RNC), a base station controller (BSC), a relay, a donor nodecontrolling relay, a base transceiver station (BTS), a transmissionpoint, a transmission node, an RRU, an RRH, nodes in distributed antennasystem (DAS), and the like.

System 100 can further comprise one or more communication serviceprovider networks 106 that facilitate providing wireless communicationservices to various UEs, comprising UE 102, via the network node 104and/or various additional network devices (not shown) included in theone or more communication service provider networks 106. The one or morecommunication service provider networks 106 can include various types ofdisparate networks, comprising: cellular networks, femto networks,pico-cell networks, microcell networks, internet protocol (IP) networksWi-Fi service networks, broadband service network, enterprise networks,cloud based networks, and the like. For example, in at least oneimplementation, system 100 can be or can comprise a large scale wirelesscommunication network that spans various geographic areas. According tothis implementation, the one or more communication service providernetworks 106 can be or can comprise the wireless communication networkand/or various additional devices and components of the wirelesscommunication network (e.g., additional network devices and cells,additional UEs, network server devices, etc.). The network node 104 canbe connected to the one or more communication service provider networks106 via one or more backhaul links 108. For example, the one or morebackhaul links 108 can comprise wired link components, such as a T1/E1phone line, a digital subscriber line (DSL) (e.g., either synchronous orasynchronous), an asymmetric DSL (ADSL), an optical fiber backbone, acoaxial cable, and the like. The one or more backhaul links 108 can alsoinclude wireless link components, such as but not limited to,line-of-sight (LOS) or non-LOS links which can include terrestrialair-interfaces or deep space links (e.g., satellite communication linksfor navigation).

In one technique, the UE 102 can send a reference signal back to thenetwork node 104. The network node 104 takes a received reference signalfrom the UE 102, estimates the condition of the channel, which can beinfluenced by various factors, such as objects in the line of sight,weather, movement, interference, etc., and after correcting for moreissues (e.g., interference), adjusts the beamforming rates for eachantenna transmitting to the UE 102, and changes parameters, so as totransmit a better beam toward the UE 102. This ability to select MIMOschemes and use beamforming to focus energy and adapt to changingchannel conditions can allow for higher data rates.

Referring now to FIG. 2, illustrated is an example schematic systemblock diagram of cyclic prefix orthogonal frequency-divisionmultiplexing with mixed numerology according to one or more embodiments.As an example of multiple numerology, FIG. 2 depicts the block diagramof the CP-OFDM transmitter in the mixed numerology case 200. The upperbranch 202 uses numerology with subcarrier spacing of 15 KHz spacing,while the lower branch 204 uses subcarrier spacing of 30 KHz. The lowerbranch 204 can generate two OFDM symbols during the time the upperbranch 202 can generate one OFDM symbol. If K1 to Km representsubcarrier indices for 15 KHz spacing and P1 to Pn represent subcarrierindices for 30 KHz spacing, then orthogonality can be lost due to mixednumerology. However, guard tones G, can be used to balance Equation 5,below, between the numerologies. Therefore, if G is the number of guardtones between these two numerologies, then:

$\begin{matrix}{{P_{1} = {\frac{K_{M}}{2} + G}},} & {{Equation}\mspace{14mu}(5)}\end{matrix}$cyclic-prefixes 206, 208 can be used to mitigate interference introducedby the upper branch 202 and the lower branch 204, respectively.Additionally, a summation block 210 can be used to apply the guard tonesto assist in interference reduction.

Referring now to FIG. 3, illustrated is an example schematic systemblock diagram of filtered orthogonal frequency-division multiplexingwith mixed numerology according to one or more embodiments. FIG. 3depicts the block diagram for a filtered OFDM with mixed numerology 300.The upper branch 202 uses numerology with subcarrier spacing of 15 KHzspacing, while the lower branch 204 uses subcarrier spacing of 30 KHz.The lower branch 204 can generate two OFDM symbols during the time theupper branch 202 can generate one OFDM symbol. If K1 to Km represent subcarrier indices for 15 KHz spacing and P1 to Pn represent subcarrierindices for 30 KHz spacing, then orthogonality can be lost due to mixednumerology. However, guard tones G, can be used to balance Equation 5,between the numerologies. Therefore, if G is the number of guard tonesbetween these two numerologies, then cyclic-prefixes 206, 208 can beused to mitigate interference introduced by the upper branch 202 and thelower branch 204, respectively. Furthermore, each branch can leverage atransmission filter 302, 304 to minimize interference. The transmissionfilters 302, 304 can reduce certain aspects of the signals received fromthe cyclic-prefixes 206, 208, namely signal interference. Additionally,a summation block 210 can be used to apply the guard tones to assist ininterference reduction.

Referring now to FIG. 4, illustrated is an example schematic systemblock diagram of a windowed orthogonal frequency-division multiplexingwith mixed numerology according to one or more embodiments. FIG. 4depicts the block diagram for windowed OFDM with mixed numerology 400.The upper branch 202 uses numerology with subcarrier spacing of 15 KHzspacing, while the lower branch 204 uses subcarrier spacing of 30 KHz.The lower branch 204 can generate two OFDM symbols during the time theupper branch 202 can generate one OFDM symbol. If K1 to Km represent subcarrier indices for 15 KHz spacing and P1 to Pn represent subcarrierindices for 30 KHz spacing, then orthogonality can be lost due to mixednumerology. However, guard tones G, can be used to balance Equation 5,between the numerologies. Therefore, if G is the number of guard tonesbetween these two numerologies, then cyclic-prefixes 206, 208 can beused to mitigate interference introduced by the upper branch 202 and thelower branch 204, respectively. Furthermore, each branch can leveragewindow technique blocks 402, 404 to minimize interference. The windowtechnique blocks 402, 404 can reduce interference in the time domain ofthe signals received from the cyclic-prefixes 206, 208. Additionally, asummation block 210 can be used to apply the guard tones to assist ininterference reduction.

Referring now to FIG. 5, illustrated is an example schematic systemblock diagram of a message sequence chart between a network node anduser equipment according to one or more embodiments. FIG. 5 depicts amessage sequence chart for downlink data transfer in 5G systems 500. Thenetwork node 104 can transmit reference signals to a user equipment (UE)102. The reference signals can be cell specific and/or user equipment102 specific in relation to a profile of the user equipment 102 or sometype of mobile identifier. From the reference signals, the userequipment 102 can compute channel state information (CSI) and computeparameters needed for a CSI report at block 502. The CSI report cancomprise: a channel quality indicator (CQI), a pre-coding matrix index(PMI), rank information (RI), a CSI-resource indicator (e.g., CRI thesame as beam indicator), etc.

The user equipment 102 can then transmit the CSI report to the networknode 104 via a feedback channel either on request from the network node104, a-periodically, and/or periodically. A network scheduler canleverage the CSI report to determine downlink transmission schedulingparameters at block 504, which are particular to the user equipment 102.The scheduling parameters at block 504 can comprise modulation andcoding schemes (MCS), power, physical resource blocks (PRBs), etc. FIG.5 depicts the physical layer signaling where the density change can bereported for the physical layer signaling or as a part of the radioresource control (RRC) signaling. In the physical layer, the density canbe adjusted by the network node 104 and then sent over to the userequipment 102 as a part of the downlink control channel data. Thenetwork node 104 can transmit the scheduling parameters, comprising theadjusted densities, to the user equipment 102 via the downlink controlchannel. Thereafter and/or simultaneously, data can be transferred, viaa data traffic channel, from the network node 104 to the user equipment102.

Referring now to FIG. 6, illustrated is an example schematic systemblock diagram of a 15 KHz channel state information reference signalstransmission with mixed numerology according to one or more embodiments.The proposed design can support different numerologies between theCSI-RS and the underlying PDSCH. Therefore, the user equipment specificCSI-RS can be transmitted with the same numerology as what the userequipment is configured at a given instance and not require the supportof different numerologies at the user equipment at any given instance.FIG. 6 depicts a specific CSI-RS with a 15 KHz numerology transmittedthroughout the system bandwidth irrespective of the underlying PDSCH 608numerology. 15 KHz numerology can comprise CSI-RS 610, which isequivalent to the PDSCH 608 resource blocks 612. Consequently, CSI-RS602 can be used at the 60 KHz numerology 600, which is less that thestandard PDSCH 608 resource block 606. Therefore, remaining resources604 are not unnecessarily tied up.

Referring now to FIG. 7, illustrated is an example schematic systemblock diagram of a 60 KHz channel state information reference signalstransmission with mixed numerology according to one or more embodiments.FIG. 7 depicts a case where a user equipment specific CSI-RS with 60 KHznumerology 700 is transmitted throughout the system bandwidthirrespective of the underlying PDSCH numerology, PDSCH of 15 KHz 706. 60KHz numerology 700 can comprise CSI-RS 702, which are equivalent to thePDSCH resource blocks 704. Consequently, CSI-RS 710 can be used at the15 KHz numerology 706, which is less that the standard PDSCH resourceblock 708. Therefore, remaining resources 712 are not unnecessarily tiedup because there is no transmission tying up these resources. When thenumerology between the CSI-RS 710 and PDSCH 708 is different, then it ispotentially difficult and perhaps inefficient to rate match the PDSCH708 transmission around the CSI-RS 710. Furthermore the rate matchingcan depend on the difference between the numerology of the PDSCH 708 andthe CSI-RS 710. While rate matching the PDSCH 708 around the CSI-RS 710is viable, additional resources need to be rate matched to reduce theinterference due to the CSI-RS 710. However, if the PDSCH 708 and theCSI-RS 710 transmission overlap each other, additional efficiencies canbe generated.

Referring now to FIGS. 8 and 9, illustrate representations of a mixednumerology signal. FIG. 8 depicts various signal processing stepsassociated with the multiple numerologies and FIG. 9 depicts a timedomain and frequency domain representation of the multiple numerologies.FIG. 8 illustrates CSI-RS signals that can be sent through a serialformat to parallel format block 802, the output of the serial format toparallel format block 802 can then be sent to an inverse FFT block 804,the output from the inverse FFT block 804 can then be sent to a parallelto serial block 806, the output from the parallel to serial block 806can then be sent to a cyclic prefix (CP) block 808, and then the outputfrom the CP block 808 (e.g., symbols) can be transmitted to a symbolaccumulation block 810 (e.g., running the FFT twice). The PDSCH signalscan be sent through a serial format to parallel format block 812, theoutput from the serial format to parallel format block 812 can then besent to an inverse FFT block 814, the output from the inverse FFT block814 can then be sent to a parallel format to serial format block 816,and then the output from the parallel format to serial format block 816can be sent to a CP block 818. The resulting signals from the symbolaccumulation block 810 and the CP block 818 can then experience asummation at block 818. It should be understood that a symbol levelalignment between the multiple numerologies is assumed to exist, whichis stems from choosing the same fraction of the OFDM symbol as the CP(β) and by the fact that the scaling of the numerologies (α) is given by2 k, where k is an integer.

At the receiver only 1 FFT can be matched to the numerology of the PDSCHused since the PDSCH is the intended signal that the receiver needs todetect. Even though the numerology of the CSI-RS is different from thePDSCH, it can be known by the receiver. Consequently, the receiver canhave a-priori knowledge of the CSI-RS numerology as well as the CSI-RSsequence based on a configuration and/or pre-configuration of thereceiver.

Since it can be assumed that the receiver knows the interfering CSI-RSsequence and the numerology of CSI-RS the receiver (e.g., UE) can alsoobtain this information via a network assistance procedure (e.g., thebase station associated with the network can send signal interferencedata to the UE). Therefore, since the numerology and the CSI-RS sequenceis known at the receiver, it is possible to construct a version of theCSI-RS, once is it passes through an FFT matched to the PDSCH. The timedomain CSI-RS signal at the transmitter can be given by Equation (6):C _(l,m)=Σ_(j=1) ^(N/α) c _(l,j) e ^(2πi(m-1)(j-1)α/N)m,j∈[1,N/α],  Equation (6):(6.1)where C_(l,m) is the CSI-RS in the time domain signal with ‘l’ as theOFDM symbol index, and ‘m’ as the sample (time bin) index with the givenOFDM symbol. Similarly c_(l,j), is the CSI-RS in the frequency domainwith ‘l’ as the OFDM symbol index and ‘j’ is the sub-carrier (frequencybin) index. At the receiver when the signal is passed through the FFTstage with a different numerology, the resulting CSI-RS can be writtenas:

$\begin{matrix}{{\overset{\sim}{c}}_{j^{\prime}} = {{\frac{1}{N}{\sum\limits_{l = 1}^{\alpha}\;{\sum\limits_{m = 1}^{N\text{/}\alpha}\;{C_{l,m}e^{{- 2}\pi\;{i{({m^{\prime} - 1})}}{({j^{\prime} - 1})}\text{/}N}}}}} = {\sum\limits_{l = 1}^{\alpha}\;{\sum\limits_{j = 1}^{N\text{/}\alpha}\;{c_{l,j}\left\lbrack {\frac{1}{N}{\sum\limits_{m = 1}^{N\text{/}\alpha}\;{e^{2\pi\;{i{({m - 1})}}{({j - 1})}\alpha\text{/}N}e^{{- 2}\pi\;{i{({m^{\prime} - 1})}}{({j^{\prime} - 1})}\text{/}N}}}} \right\rbrack}}}}} & {{Equation}\mspace{14mu}(7)}\end{matrix}$

In Equation (7), the terms inside the 2^(nd) summation do not depend onthe sequence c_(l,j) and it models the energy seen from the differentFFT bins of the transmitter into a given FFT bin at the receiver due tothe numerology mismatch between the two. Therefore the net signal fromthe CSI-RS at the receiver can be written as Equation (8):

$\begin{matrix}{{{\overset{\sim}{c}}_{l^{\prime},j^{\prime}} = {\sum\limits_{j = 1}^{N\text{/}\alpha}\;{c_{l,j}{\phi_{l}\left( {j,j^{\prime}} \right)}}}}{{\phi_{l}\left( {j,j^{\prime}} \right)} = {\frac{1}{N}{\sum\limits_{m = 1}^{N\text{/}\alpha}\;{e^{2\pi\;{i{({m - 1})}}{({j - 1})}\alpha\text{/}N}e^{{- 2}\pi\;{i{({m^{\prime} - 1})}}{({j^{\prime} - 1})}\text{/}N}}}}}} & {{Equation}\mspace{14mu}(8)}\end{matrix}$

The term ϕ_(l)(j,j′) does not depend on the CSI-RS sequence and can becomputed for each possible combination of numerology mix. Then thereceiver can thereby generate the net signal from the CSI-RS as seenfrom its FFT engine and subsequently actively cancel the signal. Thefunction ϕ_(l)(j,j′) depends only on the difference between ϕj-j′.

Referring now to FIG. 10, illustrated is an example flow diagram for anexample schematic system block diagram of transmitter and receiver fastfourier transform (FFT) bin relationship according to one or moreembodiments. Since the FFT engines at the transmitter and receiver canoperate on different numerologies, the symbol index and the sample indexat the transmitter (l,m) and at the receiver (l′,m′) can be considered,as illustrated in FIG. 10. Therefore Equation (9) can be derived fromFIG. 10:m′=m+(l−1)N/α  Equation (9):

Referring now to FIG. 11, illustrated is an example flow diagram for amixed numerology cancelation procedure according to one or moreembodiments. At element 1100, based on a first subcarrier spacing of awireless network a method can analyze signal interference datarepresentative of a signal interference (e.g., UE 102). At element 1102,based on a first result of the analyzing, the method can determine acause of the signal interference (e.g., UE 102). In response to thedetermining, at element 1104 the method can decode the signalinterference data, and decoding channel state data associated with achannel state data reference signal, wherein the channel state data isfurther associated with a second subcarrier spacing of the mobile device(e.g., UE 102). At element 1106, based on the signal interference dataand the channel state data, the method can determine an estimatedchannel response frequency (e.g., UE 102). At element 1108, based on thesignal interference, the method can generate an equivalent signalinterference generated to be equivalent to the signal interference(e.g., UE 102), wherein the equivalent signal interference has beenmodified as a function of the estimated channel response frequency,resulting in an estimated cancelation signal; and at element 1110, basedon the estimated cancelation signal, the method can cancel a receivedsignal from the network device (e.g., network node 104) of the wirelessnetwork.

Referring now to FIG. 12, illustrated is a schematic block diagram of anexemplary end-user device such as a mobile device 1200 capable ofconnecting to a network in accordance with some embodiments describedherein. Although a mobile handset 1200 is illustrated herein, it will beunderstood that other devices can be a mobile device, and that themobile handset 1200 is merely illustrated to provide context for theembodiments of the various embodiments described herein. The followingdiscussion is intended to provide a brief, general description of anexample of a suitable environment 1200 in which the various embodimentscan be implemented. While the description includes a general context ofcomputer-executable instructions embodied on a machine-readable storagemedium, those skilled in the art will recognize that the innovation alsocan be implemented in combination with other program modules and/or as acombination of hardware and software.

Generally, applications (e.g., program modules) can include routines,programs, components, data structures, etc., that perform particulartasks or implement particular abstract data types. Moreover, thoseskilled in the art will appreciate that the methods described herein canbe practiced with other system configurations, includingsingle-processor or multiprocessor systems, minicomputers, mainframecomputers, as well as personal computers, hand-held computing devices,microprocessor-based or programmable consumer electronics, and the like,each of which can be operatively coupled to one or more associateddevices.

A computing device can typically include a variety of machine-readablemedia. Machine-readable media can be any available media that can beaccessed by the computer and includes both volatile and non-volatilemedia, removable and non-removable media. By way of example and notlimitation, computer-readable media can comprise computer storage mediaand communication media. Computer storage media can include volatileand/or non-volatile media, removable and/or non-removable mediaimplemented in any method or technology for storage of information, suchas computer-readable instructions, data structures, program modules orother data. Computer storage media can include, but is not limited to,RAM, ROM, EEPROM, flash memory or other memory technology, CD ROM,digital video disk (DVD) or other optical disk storage, magneticcassettes, magnetic tape, magnetic disk storage or other magneticstorage devices, or any other medium which can be used to store thedesired information and which can be accessed by the computer.

Communication media typically embodies computer-readable instructions,data structures, program modules or other data in a modulated datasignal such as a carrier wave or other transport mechanism, and includesany information delivery media. The term “modulated data signal” means asignal that has one or more of its characteristics set or changed insuch a manner as to encode information in the signal. By way of example,and not limitation, communication media includes wired media such as awired network or direct-wired connection, and wireless media such asacoustic, RF, infrared and other wireless media. Combinations of the anyof the above should also be included within the scope ofcomputer-readable media.

The handset 1200 includes a processor 1202 for controlling andprocessing all onboard operations and functions. A memory 1204interfaces to the processor 1202 for storage of data and one or moreapplications 1206 (e.g., a video player software, user feedbackcomponent software, etc.). Other applications can include voicerecognition of predetermined voice commands that facilitate initiationof the user feedback signals. The applications 1206 can be stored in thememory 1204 and/or in a firmware 1208, and executed by the processor1202 from either or both the memory 1204 or/and the firmware 1208. Thefirmware 1208 can also store startup code for execution in initializingthe handset 1200. A communications component 1210 interfaces to theprocessor 1202 to facilitate wired/wireless communication with externalsystems, e.g., cellular networks, VoIP networks, and so on. Here, thecommunications component 1210 can also include a suitable cellulartransceiver 1211 (e.g., a GSM transceiver) and/or an unlicensedtransceiver 1213 (e.g., Wi-Fi, WiMax) for corresponding signalcommunications. The handset 1200 can be a device such as a cellulartelephone, a PDA with mobile communications capabilities, andmessaging-centric devices. The communications component 1210 alsofacilitates communications reception from terrestrial radio networks(e.g., broadcast), digital satellite radio networks, and Internet-basedradio services networks.

The handset 1200 includes a display 1212 for displaying text, images,video, telephony functions (e.g., a Caller ID function), setupfunctions, and for user input. For example, the display 1212 can also bereferred to as a “screen” that can accommodate the presentation ofmultimedia content (e.g., music metadata, messages, wallpaper, graphics,etc.). The display 1212 can also display videos and can facilitate thegeneration, editing and sharing of video quotes. A serial I/O interface1214 is provided in communication with the processor 1202 to facilitatewired and/or wireless serial communications (e.g., USB, and/or IEEE1394) through a hardwire connection, and other serial input devices(e.g., a keyboard, keypad, and mouse). This supports updating andtroubleshooting the handset 1200, for example. Audio capabilities areprovided with an audio I/O component 1216, which can include a speakerfor the output of audio signals related to, for example, indication thatthe user pressed the proper key or key combination to initiate the userfeedback signal. The audio I/O component 1216 also facilitates the inputof audio signals through a microphone to record data and/or telephonyvoice data, and for inputting voice signals for telephone conversations.

The handset 1200 can include a slot interface 1218 for accommodating aSIC (Subscriber Identity Component) in the form factor of a cardSubscriber Identity Module (SIM) or universal SIM 1220, and interfacingthe SIM card 1220 with the processor 1202. However, it is to beappreciated that the SIM card 1220 can be manufactured into the handset1200, and updated by downloading data and software.

The handset 1200 can process IP data traffic through the communicationcomponent 1210 to accommodate IP traffic from an IP network such as, forexample, the Internet, a corporate intranet, a home network, a personarea network, etc., through an ISP or broadband cable provider. Thus,VoIP traffic can be utilized by the handset 800 and IP-based multimediacontent can be received in either an encoded or decoded format.

A video processing component 1222 (e.g., a camera) can be provided fordecoding encoded multimedia content. The video processing component 1222can aid in facilitating the generation, editing and sharing of videoquotes. The handset 1200 also includes a power source 1224 in the formof batteries and/or an AC power subsystem, which power source 1224 caninterface to an external power system or charging equipment (not shown)by a power I/O component 1226.

The handset 1200 can also include a video component 1230 for processingvideo content received and, for recording and transmitting videocontent. For example, the video component 1230 can facilitate thegeneration, editing and sharing of video quotes. A location trackingcomponent 1232 facilitates geographically locating the handset 1200. Asdescribed hereinabove, this can occur when the user initiates thefeedback signal automatically or manually. A user input component 1234facilitates the user initiating the quality feedback signal. The userinput component 1234 can also facilitate the generation, editing andsharing of video quotes. The user input component 1234 can include suchconventional input device technologies such as a keypad, keyboard,mouse, stylus pen, and/or touch screen, for example.

Referring again to the applications 1206, a hysteresis component 1236facilitates the analysis and processing of hysteresis data, which isutilized to determine when to associate with the access point. Asoftware trigger component 1238 can be provided that facilitatestriggering of the hysteresis component 1238 when the Wi-Fi transceiver1213 detects the beacon of the access point. A SIP client 1240 enablesthe handset 1200 to support SIP protocols and register the subscriberwith the SIP registrar server. The applications 1206 can also include aclient 1242 that provides at least the capability of discovery, play andstore of multimedia content, for example, music.

The handset 1200, as indicated above related to the communicationscomponent 1210, includes an indoor network radio transceiver 1213 (e.g.,Wi-Fi transceiver). This function supports the indoor radio link, suchas IEEE 802.11, for the dual-mode GSM handset 1200. The handset 1200 canaccommodate at least satellite radio services through a handset that cancombine wireless voice and digital radio chipsets into a single handhelddevice.

Referring now to FIG. 13, there is illustrated a block diagram of acomputer 1300 operable to execute a system architecture that facilitatesestablishing a transaction between an entity and a third party. Thecomputer 1300 can provide networking and communication capabilitiesbetween a wired or wireless communication network and a server (e.g.,Microsoft server) and/or communication device. In order to provideadditional context for various aspects thereof, FIG. 13 and thefollowing discussion are intended to provide a brief, generaldescription of a suitable computing environment in which the variousaspects of the innovation can be implemented to facilitate theestablishment of a transaction between an entity and a third party.While the description above is in the general context ofcomputer-executable instructions that can run on one or more computers,those skilled in the art will recognize that the innovation also can beimplemented in combination with other program modules and/or as acombination of hardware and software.

Generally, program modules include routines, programs, components, datastructures, etc., that perform particular tasks or implement particularabstract data types. Moreover, those skilled in the art will appreciatethat the inventive methods can be practiced with other computer systemconfigurations, including single-processor or multiprocessor computersystems, minicomputers, mainframe computers, as well as personalcomputers, hand-held computing devices, microprocessor-based orprogrammable consumer electronics, and the like, each of which can beoperatively coupled to one or more associated devices.

The illustrated aspects of the innovation can also be practiced indistributed computing environments where certain tasks are performed byremote processing devices that are linked through a communicationsnetwork. In a distributed computing environment, program modules can belocated in both local and remote memory storage devices.

Computing devices typically include a variety of media, which caninclude computer-readable storage media or communications media, whichtwo terms are used herein differently from one another as follows.

Computer-readable storage media can be any available storage media thatcan be accessed by the computer and includes both volatile andnonvolatile media, removable and non-removable media. By way of example,and not limitation, computer-readable storage media can be implementedin connection with any method or technology for storage of informationsuch as computer-readable instructions, program modules, structureddata, or unstructured data. Computer-readable storage media can include,but are not limited to, RAM, ROM, EEPROM, flash memory or other memorytechnology, CD-ROM, digital versatile disk (DVD) or other optical diskstorage, magnetic cassettes, magnetic tape, magnetic disk storage orother magnetic storage devices, or other tangible and/or non-transitorymedia which can be used to store desired information. Computer-readablestorage media can be accessed by one or more local or remote computingdevices, e.g., via access requests, queries or other data retrievalprotocols, for a variety of operations with respect to the informationstored by the medium.

Communications media can embody computer-readable instructions, datastructures, program modules or other structured or unstructured data ina data signal such as a modulated data signal, e.g., a carrier wave orother transport mechanism, and includes any information delivery ortransport media. The term “modulated data signal” or signals refers to asignal that has one or more of its characteristics set or changed insuch a manner as to encode information in one or more signals. By way ofexample, and not limitation, communication media include wired media,such as a wired network or direct-wired connection, and wireless mediasuch as acoustic, RF, infrared and other wireless media.

With reference to FIG. 13, implementing various aspects described hereinwith regards to the end-user device can include a computer 1300, thecomputer 1300 including a processing unit 1304, a system memory 1306 anda system bus 1308. The system bus 1308 couples system componentsincluding, but not limited to, the system memory 1306 to the processingunit 1304. The processing unit 1304 can be any of various commerciallyavailable processors. Dual microprocessors and other multi processorarchitectures can also be employed as the processing unit 1304.

The system bus 1308 can be any of several types of bus structure thatcan further interconnect to a memory bus (with or without a memorycontroller), a peripheral bus, and a local bus using any of a variety ofcommercially available bus architectures. The system memory 1306includes read-only memory (ROM) 1327 and random access memory (RAM)1313. A basic input/output system (BIOS) is stored in a non-volatilememory 1327 such as ROM, EPROM, EEPROM, which BIOS contains the basicroutines that help to transfer information between elements within thecomputer 1300, such as during start-up. The RAM 1312 can also include ahigh-speed RAM such as static RAM for caching data.

The computer 1300 further includes an internal hard disk drive (HDD)1314 (e.g., EIDE, SATA), which internal hard disk drive 1314 can also beconfigured for external use in a suitable chassis (not shown), amagnetic floppy disk drive (FDD) 1316, (e.g., to read from or write to aremovable diskette 1318) and an optical disk drive 1320, (e.g., readinga CD-ROM disk 1322 or, to read from or write to other high capacityoptical media such as the DVD). The hard disk drive 1314, magnetic diskdrive 1316 and optical disk drive 1320 can be connected to the systembus 1308 by a hard disk drive interface 1324, a magnetic disk driveinterface 1326 and an optical drive interface 1328, respectively. Theinterface 1324 for external drive implementations includes at least oneor both of Universal Serial Bus (USB) and IEEE 1394 interfacetechnologies. Other external drive connection technologies are withincontemplation of the subject innovation.

The drives and their associated computer-readable media providenonvolatile storage of data, data structures, computer-executableinstructions, and so forth. For the computer 1300 the drives and mediaaccommodate the storage of any data in a suitable digital format.Although the description of computer-readable media above refers to aHDD, a removable magnetic diskette, and a removable optical media suchas a CD or DVD, it should be appreciated by those skilled in the artthat other types of media which are readable by a computer 1300, such aszip drives, magnetic cassettes, flash memory cards, cartridges, and thelike, can also be used in the exemplary operating environment, andfurther, that any such media can contain computer-executableinstructions for performing the methods of the disclosed innovation.

A number of program modules can be stored in the drives and RAM 1312,including an operating system 1330, one or more application programs1332, other program modules 1334 and program data 1336. All or portionsof the operating system, applications, modules, and/or data can also becached in the RAM 1312. It is to be appreciated that the innovation canbe implemented with various commercially available operating systems orcombinations of operating systems.

A user can enter commands and information into the computer 1300 throughone or more wired/wireless input devices, e.g., a keyboard 1338 and apointing device, such as a mouse 1340. Other input devices (not shown)may include a microphone, an IR remote control, a joystick, a game pad,a stylus pen, touch screen, or the like. These and other input devicesare often connected to the processing unit 1304 through an input deviceinterface 1342 that is coupled to the system bus 1308, but can beconnected by other interfaces, such as a parallel port, an IEEE 2394serial port, a game port, a USB port, an IR interface, etc.

A monitor 1344 or other type of display device is also connected to thesystem bus 1308 through an interface, such as a video adapter 1346. Inaddition to the monitor 1344, a computer 1300 typically includes otherperipheral output devices (not shown), such as speakers, printers, etc.

The computer 1300 can operate in a networked environment using logicalconnections by wired and/or wireless communications to one or moreremote computers, such as a remote computer(s) 1348. The remotecomputer(s) 1348 can be a workstation, a server computer, a router, apersonal computer, portable computer, microprocessor-based entertainmentdevice, a peer device or other common network node, and typicallyincludes many or all of the elements described relative to the computer,although, for purposes of brevity, only a memory/storage device 1350 isillustrated. The logical connections depicted include wired/wirelessconnectivity to a local area network (LAN) 1352 and/or larger networks,e.g., a wide area network (WAN) 1354. Such LAN and WAN networkingenvironments are commonplace in offices and companies, and facilitateenterprise-wide computer networks, such as intranets, all of which mayconnect to a global communications network, e.g., the Internet.

When used in a LAN networking environment, the computer 1300 isconnected to the local network 1352 through a wired and/or wirelesscommunication network interface or adapter 1356. The adapter 1356 mayfacilitate wired or wireless communication to the LAN 1352, which mayalso include a wireless access point disposed thereon for communicatingwith the wireless adapter 1356.

When used in a WAN networking environment, the computer 1300 can includea modem 1358, or is connected to a communications server on the WAN1354, or has other means for establishing communications over the WAN1354, such as by way of the Internet. The modem 1358, which can beinternal or external and a wired or wireless device, is connected to thesystem bus 1308 through the input device interface 1342. In a networkedenvironment, program modules depicted relative to the computer, orportions thereof, can be stored in the remote memory/storage device1350. It will be appreciated that the network connections shown areexemplary and other means of establishing a communications link betweenthe computers can be used.

The computer is operable to communicate with any wireless devices orentities operatively disposed in wireless communication, e.g., aprinter, scanner, desktop and/or portable computer, portable dataassistant, communications satellite, any piece of equipment or locationassociated with a wirelessly detectable tag (e.g., a kiosk, news stand,restroom), and telephone. This includes at least Wi-Fi and Bluetooth™wireless technologies. Thus, the communication can be a predefinedstructure as with a conventional network or simply an ad hoccommunication between at least two devices.

Wi-Fi, or Wireless Fidelity, allows connection to the Internet from acouch at home, a bed in a hotel room, or a conference room at work,without wires. Wi-Fi is a wireless technology similar to that used in acell phone that enables such devices, e.g., computers, to send andreceive data indoors and out; anywhere within the range of a basestation. Wi-Fi networks use radio technologies called IEEE 802.11 (a, b,g, etc.) to provide secure, reliable, fast wireless connectivity. AWi-Fi network can be used to connect computers to each other, to theInternet, and to wired networks (which use IEEE 802.3 or Ethernet).Wi-Fi networks operate in the unlicensed 2.4 and 5 GHz radio bands, atan 11 Mbps (802.11a) or 54 Mbps (802.11b) data rate, for example, orwith products that contain both bands (dual band), so the networks canprovide real-world performance similar to the basic 10BaseT wiredEthernet networks used in many offices.

An important aspect of 5G, which differentiates from previous 4Gsystems, is the use of multiple numerologies. LTE systems use a singlenumerology throughout the whole in band (i.e., within LTE bandwidth, forexample—within 10 MHz, all the subcarriers can have spacing or bandwidthof 15 KHz). However, since 5G can support various applications, singlenumerology as in LTE is not efficient. Hence, multiple numerologies aredefined to serve diverse applications. For example, multiple subcarrierspacing such as 15 KHz, 30 KHz, 60 KHz, 120 KHz, 240 KHz and 480 KHz.

Interference cancelation based solutions can suffer when the CSI-RS ofone numerology is super imposed on the PDSCH of another numerologybecause it uses multiple FFT engines simultaneously in the receiver tocancel the signal with a different numerology than the numerology of thesignal it is trying to receive. Such a constraint can be limitingespecially as the number of numerologies that are dynamically mixedincrease, which increases the complexity of the receiver.

The above description of illustrated embodiments of the subjectdisclosure, including what is described in the Abstract, is not intendedto be exhaustive or to limit the disclosed embodiments to the preciseforms disclosed. While specific embodiments and examples are describedherein for illustrative purposes, various modifications are possiblethat are considered within the scope of such embodiments and examples,as those skilled in the relevant art can recognize.

In this regard, while the subject matter has been described herein inconnection with various embodiments and corresponding FIGs, whereapplicable, it is to be understood that other similar embodiments can beused or modifications and additions can be made to the describedembodiments for performing the same, similar, alternative, or substitutefunction of the disclosed subject matter without deviating therefrom.Therefore, the disclosed subject matter should not be limited to anysingle embodiment described herein, but rather should be construed inbreadth and scope in accordance with the appended claims below.

What is claimed is:
 1. A method, comprising: determining, by a mobile device comprising a processor, a cause of a signal interference experienced by the mobile device based on a first subcarrier spacing of a wireless network; in response to the determining, decoding, by the mobile device, signal interference data representative of the signal interference, and decoding channel state data associated with a channel state data reference signal, wherein the channel state data is further associated with a second subcarrier spacing of the mobile device; based on the signal interference data and the channel state data, determining, by the mobile device, an estimated channel response frequency, wherein the determining the estimated channel response frequency comprises subtracting a frequency response associated with the second subcarrier spacing of the mobile device; based on the signal interference, generating, by the mobile device, an equivalent signal interference, wherein the equivalent signal interference has been modified as a function of the estimated channel response frequency, resulting in an estimated cancelation signal; based on the estimated cancelation signal, canceling, by the mobile device, a received signal from a network device of the wireless network; and based on physical downlink shared channel data associated with the signal interference, receiving, by the mobile device, a request to transmit the channel state data at aperiodic intervals.
 2. The method of claim 1, further comprising: based on the first subcarrier spacing, analyzing, by the mobile device, the signal interference data representative of the signal interference.
 3. The method of claim 1, wherein the decoding comprises applying a fast fourier transform to the decoding of the signal interference data and the decoding of the channel state data based on a sampling rate.
 4. The method of claim 1, further comprising: converting, by the mobile device, the received signal from a serial format to a parallel format.
 5. The method of claim 1, wherein the mobile device is preconfigured to analyze the signal interference data.
 6. The method of claim 1, wherein the decoding comprises the decoding of the channel state data based on a sampling rate.
 7. The method of claim 1, further comprising: determining, by the mobile device, that the first subcarrier spacing is different than the second subcarrier spacing.
 8. A system, comprising: a processor; and a memory that stores executable instructions that, when executed by the processor, facilitate performance of operations, comprising: determining a cause of a signal interference associated with a first subcarrier spacing of a wireless network; in response to the determining the cause of the signal interference, determining an estimated channel response frequency, decoding signal interference data representative of the signal interference, and decoding channel state data, associated with a channel state data reference signal, associated with a second subcarrier spacing of the wireless network, wherein the determining the estimated channel response frequency comprises subtracting a frequency response associated with the second subcarrier spacing of the wireless network; in response to a condition being determined to have been satisfied, generating an equivalent signal interference to the signal interference; modifying the equivalent signal interference as a function of the estimated channel response frequency, resulting in an estimated cancelation signal; based on the estimated cancelation signal, canceling a received signal from a network device of the wireless network; and based on physical downlink shared channel data associated with the signal interference, receiving, via a radio resource control signal, a request to transmit the channel state data according to an aperiodic interval.
 9. The system of claim 8, wherein the condition is associated with a failed cyclic redundancy check for the physical downlink shared channel data.
 10. The system of claim 8, wherein the modifying comprises multiplying equivalent signal interference data associated with the equivalent signal interference with estimated channel response frequency data associated with the estimated channel response frequency.
 11. The system of claim 8, wherein the signal interference data is first signal interference data, and wherein the operations further comprise: receiving second signal interference data from the network device to facilitate signal interference cancelation.
 12. The system of claim 8, wherein the operations further comprise: based on the first subcarrier spacing of the wireless network, analyzing the signal interference data representative of the signal interference.
 13. The system of claim 8, wherein the signal interference data is first signal interference data, and wherein the operations comprise: in response to determining a scheduling parameter for transmission to a mobile device, receiving second signal interference data.
 14. The system of claim 8, wherein the first subcarrier spacing is different from the second subcarrier spacing.
 15. A non-transitory machine-readable medium, comprising executable instructions that, when executed by a processor, facilitate performance of operations, comprising: in response to receiving first channel state data reference signals associated with first signal interference data, facilitating canceling the first channel state data reference signals based on a condition associated with a mobile device; based on analyzing second signal interference data representative of a second channel state data reference signal, decoding the second signal interference data and decoding the first channel state data to determine an estimated channel response frequency, wherein determination of the estimated channel response frequency comprises removal of a frequency response associated with a second subcarrier spacing associated with the mobile device; and based on a physical downlink shared channel associated with the second signal interference data, receiving, via a radio resource control signal, a request to transmit the second channel state data at aperiodic intervals.
 16. The non-transitory machine-readable medium of claim 15, wherein the second signal interference data is decoded at a first sampling rate and the first channel state data is decoded at a second sampling rate.
 17. The non-transitory machine-readable medium of claim 16, wherein the first channel state data is associated with a channel state data reference signal.
 18. The non-transitory machine-readable medium of claim 15, wherein operations further comprise: generating third signal interference data to be equivalent to the estimated channel response frequency.
 19. The non-transitory machine-readable medium of claim 15, wherein the operations further comprise: analyzing the second signal interference data representative of the second channel state data reference signal, different than the first channel state data reference signals.
 20. The non-transitory machine-readable medium of claim 19, wherein the analyzing the second signal interference data is based on a configuration of the mobile device. 